Sandpapering and grinding machine.



1. M. DOWNER. SAND PAQEMNG AND GRINDING MACHINE, APPLICATION HLED 15pm31.1913. HENEWED 11m51.191st 1,259,494, Patented Mar. 19, 191s.

--fnil having 50. .the outerends thereof; v v pulley vsecured to theshaft 6 between .c the bearings 5 around which the driving belt.

9 exterifde;`

Y IOf-is'a flanged pulley secured to the shia-ft as. o .een

JOHN M, DoWNEn, ormononro, ONTARI, CANADA.

SANDIPAPERING AND GRINDING MACHINE.

specification of Lea-ers r'atent.

Application filed July 31, 1913,. Serial No. 782,200.

To all 'wko/lz t may for/earn:

Be it known that LJUHN M. Don/NER, a Subjet ot' the Klingr of (irontBritain. and resident 'of the city of Toi-mito, county of York` Provinceof Ontario, in the Dominion of Canada, have inyentml certain new anduseful l1nprm'emcnte in Handpapering andl Grinding li'lachince.inscribed in the following specification. and illust rated 'in theaccon'ipanying drawings, that. form. part of the Same.

` The principal objects of this invention are, to dieet giaving'ot timeandv labor in Wood or n'ietal'working Shops lll'lerchy materiallyreducing 'the coste Voi production.

A further object is to provide a machine withv whioli ao "t "atelandunil'orin-Iirork can. be ,accomplish The principa.l"'feati11e of 'thisinvention consists in the rangement of parts.l whereby sand papering `orgrindingjmoinbers are operatively arrangednpon aeupporting frame andadjustable tables are proifided adjacent to said grinding'nuernberg-upon which thev work to be .ground or Sand pzi'lpered .issupported` In the drawings, ,Qjurc l is a perspective view vof myiinproi machine a portion of the 'frame being l ,kien 'away/.to disclosea portion of the inte-rio) tiona `View of the machine'. Fir. 3 is a.detailed View showing the ad or; the means fo vers;

jus a le eccentric support reciprocating one ofthe "gr I ike' numeralsof referenQ res onding parts in each'vfigu e. .Y

eferring tothe drawings, 1 is the main framejoffthe machine fwhieh ie'here shown lin the ,form of a hollow pedestal-.rectangular shapedfincross .section and tapering up lt'arelbracket members ri id with theadjacent tothe t 'p and'earrying the journal .bearings 5 atthe upperends. f

ffl-ls ai; sheiftgiurnaled.elte bearings 5. the grinder disks secured toAtrally above the open top 3 of the main e.

'novel construction and are al andy part see? diente cor-- frameI 1andextending latere ly therefrom- Iatented Mar. 19, 1918. RenewedFebruary 5, 1918. Serial No. 215,560.

1l is an arm rigidly scoured to the front; side of the main frameadjacent", to the bot tom and projecting horizontally outward therefromha ving the journal hearing 12 at, theA outer end.

13 is an arm rigidly secured to the front -of Uniflame 1 adjacent tiothe top thereof, said aria extending horizontally outward and having' ajournal 14 at its outer end arranged in vertical alineinent with thejournal 12.

is a vertical spindle journaled in the hearings 12 and 1-1- externlingllicrealmve and 1G is la small Spindle Secured tp the ltop ol' theSpindle 15 upon which is nnnlnted a ,grinding vcylinder l'1.7 desireddiameter.

18 is' a. pulley Secured to the spindle 15 a short distance above thejournal12.

19 is a shaft horizontally arranged Within the main traine 1 having theends scoured in the Sides oli-Said frame intermediate of its height.

20 isa pulley rotatably arranged upon the shaft 1:'8lue"twi1,en theSides of the frame.

21 is4 a bracket rigidly secured to the rear side ol the frame andhaving a bracket 22 adjustably supported thereon in which is jonrnled apulley 23. Y. h

24 is an endless belt which extendeover the flanged pulley 10 on theshaft 6 and downwardly within the main frame and 11n- I der the pulley20 from whence itextende ing a quarter turn and extending around i. saidpulley it passes rearwardly to the pul- -inggu ley 23 supportedon theadjustable bracket. From thence the elt returns outside of the frame 1to the pulley 10. The-'belt 24-'is kept in proper tension by adjustingthe bracket 22.

26 is a rocker arm pivotally Supported intermediatet of its length onthe bracket 2,7 i

at the rearside of the frame 1 to one side of saidfroeker arm having ahorizontally arranged fork28 at its outer end. l

29 is a collar rotatably secured upon the spindle 15 a Short distanceabovethe bearing 12 and having a pair 'of laterally extenddg'eons 30which arejournaled' in the bearlngs 31 on lthe outer end of the lfork28. .l 32 is a vertically arranged fork formed on' the inner end of .therocker arm 26.

33 is a flanged sleeve secured in one of the which may he oiE any l sideWalls of the main frame below the Shaft 19.

34 is a stud fitted into the sleeve 83 and having a reduced threadedouter end 85 upon which is threaded a lock nut 36. The outer extremityof the stud 84 is formed with a square end 37.

-38 is an eccentrically arranged portion of the stud 34 extendinginwardly into the frame and upon which is journaled the spur gear wheel39, said spur gear having` a sleeve hub 4() carrying an eccentric 41 onits inner end. adapted to extend into the fork 32-on the Iinner endofthe rocker arm 26. The spur gear 39 is adapted to mesh with a spurpinion 42 secured to the pulley 20,

4 but-the said spur gear may be moved out of mesh with said pinion byrotating the stud 34 within the sleeve 33 swinging the eccentricallyarranged end 38 downwardly.

43 and 44 are a pair of socket members preferably formed integral withthe main frame 1 arranged on the sides thereof in perpendicularalineinent and slightly to one side of the vertical center.

45 'is a square bar rigidly secured in said socket members.

46 is a block. slidabl arranged on the bar 45 and Split longitudinallyon one corner having the lugs 47 arranged intermediate of its lengthinwhich a suitable clamping member 48 isseoureflA 49 is a cylindricalsocket member preferably formed integral with the blockdft and arranged'horizontally and in parallel alineinent with the shaft 6 and preferablyin thc same perpendicular' plano. The socket member 49 is preferablyformed with a horiaontal cylindrical hole-extending from end to endthereof.

5Gis a bar havin a rounded end fitting in the socket49 an( held fromturning by the set screws 51. Theouter portion of the bar 50 is square.l

52 is a square sleeve slidably arranged upon the squared end of the bar50 and. split longitudinally and formed with the lugs 58 adapted to beclamped together.

54 is an upright carried by the sleeve 52, said .upright having securedat its upper end in a suitable guideway a segmental member 54, saidsegmental member being adapt-v ed to begswung forward or backward and haring an arc-shaped slot 55 therein through which extends the bolt of theclainping'memher 56j The lower edge of the-segmental member is formedwith Worm gear teeth adapted to engage the worm 57 secured to thespindle 58 journaled inthe lugs ..extending from one side of the upright54.

'60 is, a table secured tothe segmental member 54 and having its inneredge ar' ranged close Ato' the grinder disk 7. The table 60 may beadjusted 'to any desired angle by rotating the. spindle 58 bymeans ofthe hand wheel at the outer end thereof, said spindle operating the wormin the'vworniV gear portion of the segment. The table may be heldrigidly in any desired position byI means of the clamp member 56. Thetablel may be adjusted close tothe face of the grinder disk or awayfromthe sameby slidirilg the sleeve 52 carrying the upright upon t e beregulated. to any desired position by adjusting the position of theblock 46 upon the vertical bar 45.

It ,Will thus be seen that any'arrangement or adjustment may-be had. Theconstruction herein described for the adjustable table for the rinder disk` is duplicated on eachl side of t e machine.

61 is an arm securedntothe front face ofA the frame immediately abovethe opening 25 and extending horizontally outward therefrim having asquare socket 62 at the outer en 68 is a square Vhar secured in thesocket 62 and extending upwardly therefrom having the upper end firmlysecured in the square socket portion 64 of the' arm 13 arranged im#inediatelybehind the journal bearing 14.

65 is a block slidably arranged on the bar 63 and split longitudinallyand adapted to be clamped thereon to be held in any desired position.Said block having a transversely arranged socket member 66 formed rigidtherewith. v

67 is a square bar secured in the socket 66 and extending horizontallyoutward therefrom past the spindle 15.

68 is a. split sleeve slidably arranged-on the outer end of the bar. 67and carrying the upright 69, which upright is identical inv/ bar 50 andthe height of the table may j by a rocking mechanism precisely the saineas that supporting the table 60, Isaid tableV 7 0 having a circularopening 71 therethrough through which the grinding cylinder 17 carriedon the vertical spindle 15 extends.

Thecircle opening 71 is preferably formed with an inwardly projecting'annular flange 72 at the bottom edge. i

'I3 is a'ring member formed with a'anged edge adapted to fit within torest upon `the flange made removable so that di'erent rings may be used`according to .the sizejo the grinder cylinder. V

This arrangement of rings'is provided S0 that different sizes of'grlnding cylinders may be used.

In the use of this device, it is set up in the desired position in theshop and the pulley 8 is lbelted up to a suitable driving means. Therotation of the pulley 8 operates the shaft 6 and consequently the grinding disks 7 so that the mechanic desiring .to

the circle .71 and 72.-. This ring.' is, 4 sizes of.-

having an eccentric end, a rocker arm having a forked end engaging theeccentric carried by said gear Wheel and a lorked outer end operativelyconnected with the vertical spindle and adapted to reciprocatesaidspindle.

5. In a sand-papermg and grinding machine, the combination with a mainframe i and horizontally journaled grinder shaft, of

a vertical grinder spindle suitably journaled and` rotated, a journalbearing arranged in the side of the frame, a stud rotatably arlan ed insaid 'ournal bearino and havin outer end operatively connected with saidvertical spindle to reciprocate the saine, and a spur pinion suitablyjournaled and rotated and adapted to mesh with said spur gear.

6. In a sancbpapering and grinding inachine, the combination with a mainframe and spindle grinding member, a vertically arranged bar rigidlysupported from said ra1ne,'a clamping member slidably and nonrotatablysecured to said vertical member, a horizontally adjustable memberconnected to said vertically' adjustable member, and a. table adjustablysupported upon the horizontal adjustable member.

7. In asand-papering and grinding machine, the combination with a mainframe and rotary grinding member, of a. rigid vertical' guide bar, anarm slidably and nonrotatively supported on said bar, an uprightslidably and non-rotatively supported on said arm, and a tableadjustably supported on said upright adjacent to said grinding member.

8. In a sandq'uaperinp,` and grindin machine, the combination with amain Irame and rotary grinding member, of a vertically and horizontallyadjustable upright arrangedv adjacent to said grinding member, asegmental member supported on said. upright, said segmental memberhaving an arc shaped slot and a projecting angevformed with Worm wheelteeth, a Worm j ournaled on said upright and meshing with said toothedsegment, said worm having an extension spindle and a hand Wheel, aclamping member extending through said slot and adapted to lock saidsegments in various adjusted positions, and a-table securedlto saidsegment.

9. In a sandpapering and grinding machine, the combination with a mainframe and a vertical grinder spindle, of a table adjustably support@from said frame and having a circular* opening through which saidspindle extends, said circular opening having a' hanged lower edge, anda removable ring adapted to it into the opening in said table.

Signed at the city of Toronto, Ontario, Canada, this 28th" da of July1913. J HN M. DOWNER.

Witnesses:

A. Gr. KELLY, H, L. TRJMBIE.

